Spindle-step.



J. R. MITCHELL.

SPINDLE STEP.

APPLICATION FILED MAY 14, 1912 1 ,088,9 1 9, Patented Mar. 3, 1914.

fig a fig. 5

a 3 'z' /A UNITED STATES PATEN T ()FFICE.

JOHN R. MITCHELL, OF MONTCLAIR, NEW JERSEY.

SPINIDLE-STEP.

To all whom it may concern:

Be it known that I, JOHN R. MITCHELL, a citizen of the United States, residing at Montclair, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Spindle-Steps, of which the following is a specification.

This invention relates to steps for spindles and it resides in a novel construction by which the step is held in place in the rail of a spinning frame.

The novel features of the invention will be apparent from the following description taken in connection with the drawings.

In the drawings, Figure 1 is a section hrough one of my steps and a part of the rail in which it is mounted; Fig. 2 is a side view of the step; Fig. 3 is a vertical section through the device shown in Fig. 2; Fig. 4: is a side view of a spring locking member, and Fig. 5 is a section similar to Fig. 1, showing a modified form of step.

As shown in these drawings, the step 1 fits closely in a hole 2, made through the rail 3, the inner face 4; of the step being substantially flush with the inner face of the rail. The step is pushed into place in the hole and is limited in its initial movement by any suitable means, such as the flange 5, around the top as shown in Fig. 1. Another means of limiting the inward movement is to make the opening and the step taper inwardly, as shown in Fig. 5. In the top face of the step a suitable depression 6 forms a bearing socket for the spindle.

In order to hold the step in place after it is inserted in the rail I make an opening 7 transversely through the step above its inner end, and this opening is curved on the inner side out toward the end, thus forming practically grooves 8 on opposite sides at the inner margin. A curved steel wire 9 or other locking means is inserted through the opening 7, as shown in the drawings, and the ends of the wire when the step is in place project outwardly at an angle across the inner edge of the opening until the step fits so that the contact of those ends against the inner face of the rail 3 prevents the step Specification of Letters Patent.

Application filed May 14, 1912.

Patented Mar. 3, 1914.

Serial No. 697,277.

from being removed. It can be removed by suflicient pressure but will be held against accidental removal and the constant pressure of the spring will hold the step firmly in position. Owing to the curved shape of the slot a spring 9 can be easily inserted before the step is pushed into the opening and the ends of the spring can be bent in toward each other so as to enter the opening by means of the fingers or by the use of any suitable tool.

While my invention is not limited to the materials used, it may be stated that the step is ordinarily made of porcelain and by the construction described it can be easily and securely fastened in any spindle rail even where that rail is made of unyielding material such as steel or other metal.

Having thus decribed my invention, what I claim is:

1. A spindle step having a greater diameter at one end than at the other and adapted to fit in a hole in a rail, the said step having a bearing socket in the end of greater diameter and a transverse hole therethrough curved on a plane longitudinal of the step and terminating at the end of" smaller diameter within the margin of the step at that end whereby a fastening means may extend into said step at the smaller end through said curved hole therein.

2. The combination with a rail of a step fitting in a hole in said rail with its inner end substantially flush with the inner face of said rail, means for limiting the inward movement of said step in said hole, the said step having longitudinal grooves at its inner end connected by a transverse hole, and a curved spring wire passing through said hole resting in said grooves and en aging the inner face of said rail to lock said step in place.

In testimony whereof I aflix my signature in presence of two witnesses.

JOHN R. MITCHELL.

l/Vitnesses DOROTHY F. Bnsnnn, FREEMAN Cass.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents, Washington, I). C. 

